72025139 has 2 divisors, whose sum is σ = 72025140. Its totient is φ = 72025138.

The previous prime is 72025127. The next prime is 72025189. The reversal of 72025139 is 93152027.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72025139 - 2⁴ = 72025123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72025189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36012569 + 36012570.

It is an arithmetic number, because the mean of its divisors is an integer number (36012570).

Almost surely, 2^72025139 is an apocalyptic number.

72025139 is a deficient number, since it is larger than the sum of its proper divisors (1).

72025139 is an equidigital number, since it uses as much as digits as its factorization.

72025139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 72025139 is about 8486.7625747396. The cubic root of 72025139 is about 416.0651767794.

The spelling of 72025139 in words is "seventy-two million, twenty-five thousand, one hundred thirty-nine".